Method and apparatus for controlling automatic shampoo machine

Claim 7

Apparatus for applying hair treating solutions to hair on the human head comprising means for storing hair treating solutions, a nozzle assembly for directing jets of solution at the hair to be treated, a pump for supplying treating solution to said nozzle assembly, valve means between said storage means and said pump, and a control circuit for cyclically controlling said valve means in response to predetermined decreasing levels of liquid solution in said storage means to allow measured amounts of liquid treating solution to be supplied to said nozzle assembly.

Claim 8

Apparatus for applying hair treating solutions to hair on the human head comprising means for storing hair treating solutions, a nozzle assembly for directing jets of solution at the hair to be treated, a pump for supplying treating solution to said nozzle assembly, valve means between said storage means and said pump, and a control circuit for cyclically controlling said valve means in response to predetermined decreasing levels of liquid solution in said storage means to allow measured amounts of liquid treating solution to be supplied to said nozzle assembly.

Claim 9

The apparatus as defined in claim 4 wherein said storage means comprises a first storage tank for storing a first treating solution and a second storage tank for storing a second treating solution, said valve means comprises a first valve for controlling the flow of first treating solution, a second valve for controlling the flow of second treating solution, said control circuit opening and closing said first and second valves alternately in response to predetermined decreasing levels of liquid solutions in said first and second storage tanks for a number of cycles determined by the amounts of treating solutions in said storage tanks.

Claim 10

The apparatus as defined in claim 5 wherein said control circuit comprises a first liquid level sensing means for sensing particular liquid levels in said first tank, second liquid level sensing means for sensing particular liquid levels in said second tank, first switch means responsive to said first level sensing means for actuating said first valve in response to particular decreasing levels of liquid solution in said first tank, second switch means responsive to said second level sensing means for actuating said second valve in response to particular decreasing levels in said second tank, said first and second switch means being interlocked to actuate said first and second valves alternately, whereby said valves are alternately opened and closed to permit measured amounts of first and second treating solution to be supplied in sequence to said nozzle assembly, said sequence being repeated for a number of cycles dependent upon the amounts of treating solutions in said tanks.

Claim 11

The apparatus as defined in claim 6 wherein said first and second liquid level sensing means comprise pluralities of electrically conductive probes extending to different depths in said first and second tanks, respectively, said probes, when submerged, completing current paths to control said first and second switch means, said first and second switch means opening and closing said first and second valves in response to different combinations of submerged and unsubmerged probes as the liquid levels decrease in said first and second tanks.

Claim 12

The apparatus as defined in claim 6 further comprising switch means for interrupting said sequence.

Claim 13

The apparatus as defined in claim 8 further comprising reset switch means for causing said sequence, after interruption, to be resumed at a point in said sequence determined by the levels of solutions in said first and second tanks.

Claim 14

The apparatus as defined in claim 6 wherein said first tank is adapted to overflow into said second tank and further comprising a fill valve connected to said first tank, and fill switch means controlling said fill valve for allowing said tanks to be filled with liquid, said fill switch means being responsive to a particular level of liquid in said second tank for releasing said fill valve.

Claim 15

The apparatus as defined in claim 10 further comprising reset switch means for releasing said fill valve independent of the level of liquid in said second tank.

Claim 16

The Apparatus as defined in claim 4 wherein said control circuit includes means for detecting a predetermined decrease in the amount of stored solution and means responsive to said detecting means for cyclically controlling said valve means to allow measued amounts of liquid treating solution to be supplied to said nozzle assembly.